Research Article
Toxicity of Metals to a Freshwater Ostracod: Stenocypris major
Table 1
Median lethal times (LT50) for S. major exposed to different concentrations for Cu, Cd, Zn, Pb, Ni, Fe, Al, and Mn.
(a) |
| Measured Cu concentration (μg/L) | LT50 (h) | 95% Confidence limits | Measured Cd concentration (μg/L) | LT50 (h) | 95% Confidence limits | Measured Zn concentration (μg/L) | LT50 (h) | 95% Confidence limits |
| 37.78 | 76.69 | 27.15–216.57 | 49.41 | 29.89 | 14.44–61.9 | 779 | 260.33 | 743.38–1562.33 | 53.18 | 19.05 | 9.02–40.26 | 88.57 | 16.72 | 8.53–32.77 | 1010 | 100.63 | 63.30–159.99 | 126.96 | 11.86 | 6.06–23.24 | 282.91 | 10.87 | 5.87–20.12 | 2456 | 52.52 | 32.18–85.71 | 573.91 | 7.31 | 4.30–12.43 | 508.43 | 6.29 | 3.77–10.48 | 3213 | 17.59 | 11.88–26.05 | 842.65 | 4.68 | 2.82–7.77 | 893.52 | 3.04 | 2.12–4.28 | 4822 | 13.17 | 10.31–16.82 |
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(b) |
| Measured Pb concentration (μg/L) | LT50 (h) | 95% Confidence limits | Measured Ni concentration (μg/L) | LT50 (h) | 95% Confidence limits | Measured Fe concentration (μg/L) | LT50 (h) | 95% Confidence limits |
| 475 | 110.26 | 79.32–153.28 | 19045 | 105.13 | 71.40–154.79 | 548.93 | 41.36 | 18.84–90.81 | 1160 | 72.39 | 53.61–97.76 | 29115 | 80.76 | 58.88–110.77 | 771.18 | 22.66 | 11.64–44.10 | 3410 | 55.66 | 42.32–73.21 | 52045 | 48.61 | 32.46–72.78 | 1084.0 | 10.13 | 5.53–18.57 | 4829 | 43.55 | 29.86–63.51 | 66665 | 17.59 | 11.88–26.05 | 3370.02 | 6.93 | 4.02–11.93 | 8973 | 9.15 | 5.90–14.17 | 90290 | 13.17 | 10.31–16.82 | 5836.64 | 4.20 | 2.82–6.25 |
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(c) |
| Measured Al concentration (μg/L) | LT50 (h) | 95% Confidence limits | Measured Mn concentration (μg/L) | LT50 (h) | 95% Confidence limits |
| 991 | 303.15 | 59.21–1552.17 | 562.28 | 155.41 | 53.84–448.63 | 4907 | 103.22 | 57.48–185.34 | 861.37 | 63.31 | 24.24–165.33 | 7454 | 55.66 | 42.32–73.21 | 1106.36 | 33.23 | 13.65–80.88 | 10210 | 43.55 | 29.86–63.51 | 3351.91 | 19.36 | 9.51–39.41 | 16348 | 9.15 | 5.90–14.17 | 5519.08 | 13.08 | 6.66–25.71 |
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